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Finding the Fourth Proportional to 490.38, 735.54 and 161.33

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Solution

The fourth proportional to 490.38, 735.54 and 161.33 is: 241.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.38 : 735.54 = 161.33 : x
  2. Step 2: Convert to fraction form
    490.38/735.54 = 161.33/x
  3. Step 3: Cross multiply
    490.38x = 735.54 × 161.33
  4. Step 4: Simplify right side
    490.38x = 118,660.99
  5. Step 5: Solve for x
    x = 118,660.99/490.38
  6. Step 6: Final answer
    x = 241.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.